Bunch builder attachment for winding machines



Sept. 13, 1938.

J. M. BURNETT BUNCH BUILDER ATTACHMENT FOR WINDING MACHINES Filed Sept.25, 1935 2 Sheets-Sheet 1 ame/VIM JHNIVLBURNETT f gzl Q Sept. 13, 1938.l`1I M, BURNETT 2,130,067

BUNCH BUILDER ATTACHMENT FOR WINDING MACHINES Filed Sept. 25, 1935 2Sheets-Sheet 2 gii E III JOHN M.BURNETT Patented Sept. 13, 1938 UNITEDSTTES P'ATENT orrici:

John M; Burnett,

Skowhegan, Maine Applicatioz September 25, 1935, seriai No. 42,097

2 Claiins.

The present invention relates to an attachment for winding machines andmore particularlygtoan automatic bunch builder attachment especiallyadapted for use in connection with Universal winding machines, althoughit will become apparent as the description proceeds that it maybe usedin connection with any ytype of winding machine upon supplying thenecessary structure e: for operating the attachment.

1;) The invention is particularly adap-ted for usevin connection withwinding machines such as described and shown in United States LettersPatent No. 1,084,459, Jan. 13', 1914 and United States v Letters PatentNo.,1,809,217, June 9, 1931.

In the present type of winding machine, the bobbin winding comprises abunching adapted to actuate the feeler in a manner which will leave onthe discharged empty bobbin an amount of waste yarn consistent with theoperation. This bunch winding is wound around the head or base of thebobbin and under the present practice there is a considerable waste.

It is therefore one of the important objects of the present invention,to provide a bunch builder which is .automatic in its operation whichwill wind a bunch on the bobbin in such a manner as to eliminate thisloss.

A still further important object of the invention is to provide a bunchbuilding attachment of this 59 character Which is not only a wastesaver, but

which eliminates a great amount of labor incident to the operation of awinding machine of the aforementioned character.

A still further important object of the present 3;, invention will befound toV reside in an attachment of this character which permits ofwinding a bunch which does not in the present case need to be wound withthe precision of that typ'e of bunch wound adjacent the head of thebobbin in order to contact with the feeler which actuates the machinewhich discharges the bobbin.

The present invention contemplates the provision of a bunch buildingattachment Vespecially adapted for use in connection with the Universaltype of winding machine, such as'sho'w'n 'n the aforementioned patents,which attachment is actuated by the mechanism of the win'ding ma'-chine, for winding a bunch of yarn on the ycenter of the bobbin asdistinguished from building the bunch adj acent the head of the bobbinthereof.

In the accompanying drawings wherein like reference numerals designatecorresp'onding parts throughout,

Figure 1 is a top plan view of a portion of a winding machineillustrating the manner in which the novel bunch building attachmentforming the subject matter of this application is secured thereto andactuated thereby, v

Figure 2 is a vertical Sectional view of Figure 1,

taken on line 2-2 thereof, looking in the direction of the arrows,

Figure 3 is a top plan view of the machine and the attachment securedthereto, illustrating the position, and the manner in Which the bunch iswound on the bobbin,

- Figure 4 is a perspective view of the bunchbuilding attachment,

Figure 5 is a front elevational view of a bobbin showing the bunch atthe central portion of the bobbin in accordance with the presentinvention,

Figurev isa front elevational view of a bobbin wolund in accordance withthe present invention showing the first stage of winding and,

Figure 'l is a front elevational view of the bobbin showing the yarn inthe second stage after the bunch has been completed.

, In the accompanying drawings Wherein for the purpose of illustrationthere is shown a preferred embodiment of the invention, the referencenumeral 6 generally designates a winding machine of the Universal typesuch as disclosed and shown in the aforementioned patents. This machineis provided with the usual winding spindle which is automatically drivenand controlled in a conventional manner not thought necessary todescribe. The winding spindle 8 is adapted to rotatably support thewooden bobbin it or any other type of yarn receiver which may be of anysuitable form as generally employed in the shuttles of automatic feelerlooms. It is to be noted in this connection that the feeler actstoeffect a change of filling when the yarn has been woven off from thebobbin down to the preliminary or bunch winding, the bunch being sodesigned to provide a sufiicient amount of yarn to run While the changeis being made so as to prevent mis-picks in the weave. In modern typesof filling-replenishing looms a bunch of relatively wide extent isnecessarily required in order that the feeler may properly co-acttherewith when the surface winding is exhausted to effect replenishmentof the shuttle before the yarn in the bunch has run out. As clearly setforth the present invention provides an improved bunch builderattachment for winding this particular type of bunch on the nakedbobbin, the width of the bunch and the amount of yarn contained thereonbeing automatically regulated in accordance with requirements throughadjustable means, to the end that the feeler on the loom may be set tooperate on the empty bobbin principle as distinguished from the bunch atthe bottom principle. It is to be Vnoted that when the feeler on theloom is set to operate on the empty bobbin principle, this settingA isaccurate from bobbin to bobbin which is not the case in the bunchat thebottom principleV for the reason that the Vbunch is not the same shape,size `and of a permanent character.

In the well known type of winding machines, such as herein illustrated,the yarn is traversed on the bobbin Iii, by means of a thread guide l2.The thread guide l2 is reciprocated With the traverse bar 13 to theextent required to deposit the Winding on the bobbin and the guide isadvanced longitudinally of the bar to progressively step the layersforward to build the yarn With the cylindrical body and a tapered nosein the usual manner. The means for reciprocating the traverse bar l3 isnot disclosed and illustrated as it may be of any suitable constructionand arrangement commonly employed in the art. This traverse bar E3 asillustrated includes two connected sections 14 and I, the section I4being slidable and projecting from the front of the frame of the machinein parallel relation with the axis of the winding spindle 8 as clearlydisclosecl. The threaded section IG of the traverse bar is secured tothe section |4 by means of the usual pin and slot connection so that itmay be displaced laterally towards the winding spindle 8 necessary inthe operation of such machines. The outer end of the section IG ismounted in a fixed bearing 20 in the usual manner.

The thread guide |2 in machines of this character as illustrated iscarried on a forked arm or yoke 22 which is provided with suitablebearings 24 encircling the bar IG permitting it to pivot thereon andslide longitudinally thereof. The guide 12 is usually made as a separateelement constructed of porcelain including an extended threadway o-rguide 26 through which the yarn draws. The thread guide |2 is advancedalong the bar IG by means of nut |8 disposed between the legs of theforked arm or yoke 22 and as clearly illustrated adapted to engage thethread on the bar E6. A contact wheel 26' of the usual construction iscarried by the nut I 8 and is adapted to make contact with the layers ofyarn deposited on the bobbin, it being rotated intermittently therefromat the end of each rear- Ward traverse of the guide IZ. As is apparentthis intermittent rotation of the contact wheel 25' turns the nut I8gradually feeding the thread guide I2 outwardly along the traverse barto cause the layers of windings to be deposited in progressivelyadvanced relation as is well known in the art.

The follower 30' projects from the yoke member 22 engaging the rearwardend of the inclined edge of the arm 34. It Will be seen as the threadguide I2 advances along the threaded section Hi the follower 30' slidesoutwardly on the inclined edge of the cop former 34 thus permitting thesection |6 to gradually swing away from the Winding spindle until iteventually assumes a position which is in alignment with the section I4.It is not thought necessary to be more specific in the manner of formingthe heel or foundation for the winding in that type of machine inasmuchas the construction and arrangement of the winding mechanisms are wellknown and in common use and therefore need no further explanationherein.

In the present type of bunch builder employed in this type of machine,that is, the bunch builder which builds the bunch on the bobbin adjacentthe head of the bobbin, there is provided an automatically actuated hookor sickle-shaped arm 40 operative in the usual manner in machines ofthis type to limit the extent of the traverse at the commencement of thewinding to effect the building of a bunch on the bobbin adjacent thehead thereof. This mechanism in this type of machine, is old and wellknown and the ratchet and cam mechanism for automatically actuating thehook 40 is well known and it is not thought necessary to be described inthis application.

The invention forming the subject matter of this application which is anattachment for this type of machine hereinbefore described and which iswell known in the art, is adapted as distinguished from the automaticbunch builder in this type of machine to build the bunch centrally ofthe bobbin as illustrated in Figures 1, 3, 5, 6, and '7 of the drawings.

The bunch building attachment, comprises a supporting arm 48 as clearlyillustrated in Figure 4 which is provided with a flat central portion 50one end of Which tapers downwardly at 52 and Which is provided with alaterally extending portion 54. The other end of the support 48 extendsdownwardly and is offset laterally the free end being bent asillustrated in Figure 4 to provide a fiat portion 56.

Referring now to Figure 3, it Will be seen that the support 48 issecured to the sleeve or bearing 20 by means of an eye-bolt l the freeend 54 being slidable in the eye of the eye-bolt 5I which isscreW-threaded in the sleeve 20. The other free end 56 of the support 48of the attachment is provided With an aperture therein inwardly of theend and rests upon the cop former 34. The free end 56 is secured to thecop former 34, by means of a bolt and nut 60 extending through theaperture in the end 56 and the cop former 34. A substantially L-shapedlink 62 is pivotally mounted on the bolt 60 adjacent the bend of thelink, and is spaced from the end 56 'of the support by means of thebushing 64. To one free end of the link 62 there is pivotally mounted aconnecting rod 66 the free pivotal end of connection to the link 62 asillustrated in Figure 4 being offset from the main portion of the arm orrod. To the other end of the arm or rod 66 there is pivotally mounted alink 58 which is provided with a hooked inner end 10. .As clearlyillustrated in the drawings the link 68 is pivotally mounted on thecentral portion 50 of the support of the attachment by means of the pin12 the point of attachment of the link 68 being adjacent the hooked endthereof so that when the link 68 is disposed at right angles to the'support 50 the hook projects beyond the side thereof but When the sameis disposed, or moved to a position substantially parallel to thecentral portion 50 of the support the hook end moves inwardly of theinner end of the support out of hooking position. A stop member 14projecting upwardly from the upper surface of the link 68 is adapted toabut the side of the support limiting the movement of the link 88 and ofcourse movement of the hook end 10 thereof.

To the free end of the shorter section of the L-shaped member 62 thereis pivotally mounted an arcuate shaped connecting link 80. It will beseen in this connection, that the connecting member 80 is bentoutwardly, and has its ends offset downwardly with respect to thecentral portion of the member. One free end of the connecting member 80is pivotally mounted on the free end of the member 62 by means of thenut and bolt 82, the Iother free end being apertured as at 84 andpivotally connected to the hook 40 of the machine by means of theconnecting pin 86. It Will be seen that the lengths of the member 80 andthe connecting links 62, 66 and 68 are such, that When the hook 40 ispushed to its innermost position adjacent the front of the machine asillustrated in Figure 3, the hooked end 10 of the member 68 is inhooking position, the member 68 being at substantially a right angle tothe central portion of the support 50. Furthermore, the links are ofsuch lengths that when the hook 40 is in the position as illustrated inFigure 1, the hooked end 10 is.moved out of hooking engagement asillustrated.

In the operation of the attachment, the bunch building mechanism on thetype of machine herein illustrated is only employed to release the hook'I0. In operating the attachment, or building a bunch centrally of thebobbin, as illustrated, the yarn is passed over the the usual orcustomary tension guide the loose end thereof being fastened or securedbetween the head of the bobbin and the bobbin holder as at 92 in theusual manner. The hook 40 is then pushed inwardly by hand to theposition illustrated in Figure 3 causing the hooked end 10 to assume thehook position therein illustrated, to receive the yarn. The yarn is thenpicked up a few inches from the head of the bobbin and passed over thehook 10 under the guide |2 and thereover as illustrated as at 04. Uponpushing the operating lever 96 to operative position, the spindlerevolves rotating the bobbin I0. Upon rotation of the bobbin |0 a fewturns of the yarn is wound on the end of the bobbin as at 98 in Figure3, from the head of the bobbin where the yarn is secured, to a positionsubstantially central of the bobbin as at I00. It will thus be seen,that the bunch is built from the point I00 outwardly of the bobbin thewidth thereof depending on the setting of the bunch building attachmentof the machine. The limit of winding of the bunch is controlled in theusual manner by regulating and setting the bunch building attachment |02which is of the usual construction, it not being thought necessary todescribe. When the required amount of yarn is wound on the bobbincompleting the bunch, depending upon the setting of the bunch buildingattachment I02 the rear end of the cop former 34 strikes the bumper 35in the usual manner releasing the hook 40 causing the member 68 to bemoved by means of the link connection to the position illustrated inFigure 1, the hook end 10 disengaging the yarn permitting it to fall tothe position illustrated in Figure 1, whereupon the spindle continues torotate the bobbin until the bobbin is filled when in the usual manner itautomatically stops.

It will thus be seen, that there is provided a bunch building attachmentfor winding machines of this character, which will overcome the presentdifilculty eliminating waste and decreasing the cost of operation.

While there is shown for the purpose of illustration a preferredembodiment of the invention, it is to be specifically understood that itis capable of various changes and modifications without departing fromthe spirit andV scope thereof, and that it may be attached to windingmachines of other types without departing from the spirit and scope ofthe invention, and it is intended therefore, that only such limitationsshall be imposed thereon, as are indicated in the prior art or in theappended claims.

Having thus described the invention, What is claimed is:

1. In a winding machine, the combination with a winding spindle, arotatably mounted screw-threaded vshaft parallel to said spindle, yarnguide means associated with said shaft and reciprocated With respect tothe spindle thereby, and an L-shaped cop former secured to said machineadjacent the inner end of said shaft having one arm extending outwardlylongitudinally of said screW-threaded shaft, said L-shaped support atthe central connecting portion thereof being provided with an aperturetherein, an eye bolt secured to said machine adjacent the outer end ofthe screw-threaded shaft, of. a support having one end slidably receivedin said eye bolt and the other end apertured and secured to said copformer by means of a bolt extending through the aforementioned apertureand the aperture in said cop former, a pivotally mounted arm on saidsupport having a hooked end portion, said hooked end portion receivingthe yarn from the guide, after one end of the yarn has been secured tothe bobbin adjacent the head thereof, and adapted to guide thetraversing of the yarn during a predetermined number of rotations of thespindle to wind a bunch centrally on the bobbin, a substantiallyl-shapedlink pivotally mounted at its central portion to the support at thepoint of connection of the support and the cop former, a link connectingthe outer end of the pivotally mounted arm and the L-shaped link, and anactuating arm pivotally connected to the free end of the L-shaped linkand operated by the machine A to actuate said link means to move thehooked end portion of the arm out of engagement with the yarn at thecompletion of the bunch to allow the yarn to be traversed by the yarnguide to build the main portion of the bobbin.

2. In a winding machine, the combination with a winding spindle, arotatably mounted screwthreaded shaft parallel to said spindle, yarnguide means associated with said shaft and reciprocated with respect tothe spindle thereby, an L-shaped cop former secured to said machineadjacent the inner end of said shaft, of an eye bolt secured to themachine adjacent the outer end of the screw-threaded shaft, a supporthaving one end slidably received in said eye bolt extendingsubstantially longitudinally of. the screW-threaded shaft and having theother end secured to the cop former, a pivotally mounted arm on saidsupport having a hooked end portion projecting inwardly toward thespindle and being disposed substantially centrally thereof, said hookedend portion receiving said yarn from said guide, after one end of saidyarn has been secured to the -bobbin adjacent the head thereof, andadapted to guide the traversing of the yarn during a predeterminednumber of rotations of the spindle to wind a bunch centrally on thebobbin, a substantially L-shaped link pivotally mounted at its centralportion at the point of. connection of the cop former and the end of thesupport, a link connecting the outer end of the L-shaped arm to theouter end of the pivotally mounted hooked end arm, an actuating armpivotally connected to the other end of the L-shaped arm and toactuating means of the machine to actuate the actuating arm and theL-shaped arm to move the hooked end portion out of engagement with theyam at the completion of the bunch to allow the yarn to be traversed tobuild the main portion of the bobbin.

JOHN M. BURNE'I'I'.

